///////////////////////////////////////////////////////////////////////////////////
/// OpenGL Mathematics (glm.g-truc.net)
///
/// Copyright (c) 2005 - 2015 G-Truc Creation (www.g-truc.net)
/// Permission is hereby granted, free of charge, to any person obtaining a copy
/// of this software and associated documentation files (the "Software"), to deal
/// in the Software without restriction, including without limitation the rights
/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
/// copies of the Software, and to permit persons to whom the Software is
/// furnished to do so, subject to the following conditions:
/// 
/// The above copyright notice and this permission notice shall be included in
/// all copies or substantial portions of the Software.
/// 
/// Restrictions:
///		By making use of the Software for military purposes, you choose to make
///		a Bunny unhappy.
/// 
/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
/// THE SOFTWARE.
///
/// @ref core
/// @file glm/detail/type_int.hpp
/// @date 2008-08-22 / 2013-03-30
/// @author Christophe Riccio
///////////////////////////////////////////////////////////////////////////////////

#pragma once

#include "setup.hpp"

#if GLM_HAS_MAKE_SIGNED

#	include <type_traits>

#endif

#if GLM_HAS_EXTENDED_INTEGER_TYPE

#	include <cstdint>

#endif

namespace glm {
    namespace detail {
#	if GLM_HAS_EXTENDED_INTEGER_TYPE
        typedef std::int8_t int8;
        typedef std::int16_t int16;
        typedef std::int32_t int32;
        typedef std::int64_t int64;

        typedef std::uint8_t uint8;
        typedef std::uint16_t uint16;
        typedef std::uint32_t uint32;
        typedef std::uint64_t uint64;
#	else
#		if(defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) // C99 detected, 64 bit types available
        typedef int64_t					sint64;
        typedef uint64_t				uint64;
#		elif GLM_COMPILER & GLM_COMPILER_VC
        typedef signed __int64			sint64;
        typedef unsigned __int64		uint64;
#		elif GLM_COMPILER & GLM_COMPILER_GCC
        __extension__ typedef signed long long		sint64;
        __extension__ typedef unsigned long long	uint64;
#		else//unknown compiler
        typedef signed long	long		sint64;
        typedef unsigned long long		uint64;
#		endif//GLM_COMPILER

    typedef signed char					int8;
    typedef signed short				int16;
    typedef signed int					int32;
    typedef sint64						int64;

    typedef unsigned char				uint8;
    typedef unsigned short				uint16;
    typedef unsigned int				uint32;
    typedef uint64						uint64;
#endif//

        typedef signed int lowp_int_t;
        typedef signed int mediump_int_t;
        typedef signed int highp_int_t;

        typedef unsigned int lowp_uint_t;
        typedef unsigned int mediump_uint_t;
        typedef unsigned int highp_uint_t;

#	if GLM_HAS_MAKE_SIGNED
        using std::make_signed;
        using std::make_unsigned;

#	else//GLM_HAS_MAKE_SIGNED
        template <typename genType>
        struct make_signed
        {};

        template <>
        struct make_signed<char>
        {
            typedef char type;
        };

        template <>
        struct make_signed<short>
        {
            typedef short type;
        };

        template <>
        struct make_signed<int>
        {
            typedef int type;
        };

        template <>
        struct make_signed<long>
        {
            typedef long type;
        };

        template <>
        struct make_signed<long long>
        {
            typedef long long type;
        };

        template <>
        struct make_signed<unsigned char>
        {
            typedef char type;
        };

        template <>
        struct make_signed<unsigned short>
        {
            typedef short type;
        };

        template <>
        struct make_signed<unsigned int>
        {
            typedef int type;
        };

        template <>
        struct make_signed<unsigned long>
        {
            typedef long type;
        };

        template <>
        struct make_signed<unsigned long long>
        {
            typedef long long type;
        };

        template <typename genType>
        struct make_unsigned
        {};

        template <>
        struct make_unsigned<char>
        {
            typedef unsigned char type;
        };

        template <>
        struct make_unsigned<short>
        {
            typedef unsigned short type;
        };

        template <>
        struct make_unsigned<int>
        {
            typedef unsigned int type;
        };

        template <>
        struct make_unsigned<long>
        {
            typedef unsigned long type;
        };

        template <>
        struct make_unsigned<long long>
        {
            typedef unsigned long long type;
        };

        template <>
        struct make_unsigned<unsigned char>
        {
            typedef unsigned char type;
        };

        template <>
        struct make_unsigned<unsigned short>
        {
            typedef unsigned short type;
        };

        template <>
        struct make_unsigned<unsigned int>
        {
            typedef unsigned int type;
        };

        template <>
        struct make_unsigned<unsigned long>
        {
            typedef unsigned long type;
        };

        template <>
        struct make_unsigned<unsigned long long>
        {
            typedef unsigned long long type;
        };
#	endif//GLM_HAS_MAKE_SIGNED
    }//namespace detail

    typedef detail::int8 int8;
    typedef detail::int16 int16;
    typedef detail::int32 int32;
    typedef detail::int64 int64;

    typedef detail::uint8 uint8;
    typedef detail::uint16 uint16;
    typedef detail::uint32 uint32;
    typedef detail::uint64 uint64;

    /// @addtogroup core_precision
    /// @{

    /// Low precision signed integer.
    /// There is no guarantee on the actual precision.
    ///
    /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 4.1.3 Integers</a>
    /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 4.7.2 Precision Qualifier</a>
    typedef detail::lowp_int_t lowp_int;

    /// Medium precision signed integer.
    /// There is no guarantee on the actual precision.
    ///
    /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 4.1.3 Integers</a>
    /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 4.7.2 Precision Qualifier</a>
    typedef detail::mediump_int_t mediump_int;

    /// High precision signed integer.
    /// There is no guarantee on the actual precision.
    ///
    /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 4.1.3 Integers</a>
    /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 4.7.2 Precision Qualifier</a>
    typedef detail::highp_int_t highp_int;

    /// Low precision unsigned integer.
    /// There is no guarantee on the actual precision.
    ///
    /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 4.1.3 Integers</a>
    /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 4.7.2 Precision Qualifier</a>
    typedef detail::lowp_uint_t lowp_uint;

    /// Medium precision unsigned integer.
    /// There is no guarantee on the actual precision.
    ///
    /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 4.1.3 Integers</a>
    /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 4.7.2 Precision Qualifier</a>
    typedef detail::mediump_uint_t mediump_uint;

    /// High precision unsigned integer.
    /// There is no guarantee on the actual precision.
    ///
    /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 4.1.3 Integers</a>
    /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 4.7.2 Precision Qualifier</a>
    typedef detail::highp_uint_t highp_uint;

#if(!defined(GLM_PRECISION_HIGHP_INT) && !defined(GLM_PRECISION_MEDIUMP_INT) && !defined(GLM_PRECISION_LOWP_INT))
    typedef mediump_int int_t;
#elif(defined(GLM_PRECISION_HIGHP_INT) && !defined(GLM_PRECISION_MEDIUMP_INT) && !defined(GLM_PRECISION_LOWP_INT))
    typedef highp_int					int_t;
#elif(!defined(GLM_PRECISION_HIGHP_INT) && defined(GLM_PRECISION_MEDIUMP_INT) && !defined(GLM_PRECISION_LOWP_INT))
    typedef mediump_int					int_t;
#elif(!defined(GLM_PRECISION_HIGHP_INT) && !defined(GLM_PRECISION_MEDIUMP_INT) && defined(GLM_PRECISION_LOWP_INT))
    typedef lowp_int					int_t;
#else
#	error "GLM error: multiple default precision requested for signed interger types"
#endif

#if(!defined(GLM_PRECISION_HIGHP_UINT) && !defined(GLM_PRECISION_MEDIUMP_UINT) && !defined(GLM_PRECISION_LOWP_UINT))
    typedef mediump_uint uint_t;
#elif(defined(GLM_PRECISION_HIGHP_UINT) && !defined(GLM_PRECISION_MEDIUMP_UINT) && !defined(GLM_PRECISION_LOWP_UINT))
    typedef highp_uint					uint_t;
#elif(!defined(GLM_PRECISION_HIGHP_UINT) && defined(GLM_PRECISION_MEDIUMP_UINT) && !defined(GLM_PRECISION_LOWP_UINT))
    typedef mediump_uint				uint_t;
#elif(!defined(GLM_PRECISION_HIGHP_UINT) && !defined(GLM_PRECISION_MEDIUMP_UINT) && defined(GLM_PRECISION_LOWP_UINT))
    typedef lowp_uint					uint_t;
#else
#	error "GLM error: multiple default precision requested for unsigned interger types"
#endif

    /// Unsigned integer type.
    ///
    /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 4.1.3 Integers</a>
    typedef unsigned int uint;

    /// @}

////////////////////
// check type sizes
#ifndef GLM_STATIC_ASSERT_NULL
    GLM_STATIC_ASSERT(sizeof(glm::int8) == 1, "int8 size isn't 1 byte on this platform");
    GLM_STATIC_ASSERT(sizeof(glm::int16) == 2, "int16 size isn't 2 bytes on this platform");
    GLM_STATIC_ASSERT(sizeof(glm::int32) == 4, "int32 size isn't 4 bytes on this platform");
    GLM_STATIC_ASSERT(sizeof(glm::int64) == 8, "int64 size isn't 8 bytes on this platform");

    GLM_STATIC_ASSERT(sizeof(glm::uint8) == 1, "uint8 size isn't 1 byte on this platform");
    GLM_STATIC_ASSERT(sizeof(glm::uint16) == 2, "uint16 size isn't 2 bytes on this platform");
    GLM_STATIC_ASSERT(sizeof(glm::uint32) == 4, "uint32 size isn't 4 bytes on this platform");
    GLM_STATIC_ASSERT(sizeof(glm::uint64) == 8, "uint64 size isn't 8 bytes on this platform");
#endif//GLM_STATIC_ASSERT_NULL

}//namespace glm
